Byline: Nick McDermott Science Reporter
TEENAGE girls are more likely to struggle with anxiety and depression if they were exposed to stress as babies, a study has found.
Those who spent their first year being raised by mothers with depression, relationship troubles or financial woes were more likely to have higher levels of cortisol, a stress hormone, in their blood as toddlers. By the time they were in their teens, there were also marked differences in their brain development from other girls. Two areas of the brain which regulate emotions were affected.
This correlated with them experiencing anxiety and symptoms of depression at the age of 18.
Researchers believe the study shows how stress early in life can lead to the development of mood disorders. They believe it could one day be used to decide whether intervention is needed when a child is young.
'We wanted to understand how stress early in life impacts patterns of brain development which might lead to anxiety and depression,' said author Dr Cory Burghy of the Waisman Laboratory for Brain Imaging and Behaviour at the University of Wisconsin, Madison.